Method and apparatus for sending and receiving HARQ-ACK message

Abstract

A method for sending and receiving a HARQ-ACK message is provided. The method includes: A terminal device selects a first PUCCH resource from at least one first PUCCH resource set based on a first time subunit. The first time subunit is a time subunit in which the HARQ-ACK message is located. The first PUCCH resource is a PUCCH resource in the first time subunit. The at least one first PUCCH resource set is configured by a network device for the terminal device based on a time unit. The terminal device sends the HARQ-ACK message to the network device based on the first PUCCH resource.

What is claimed is: 
     
       1. A method for sending hybrid automatic repeat request acknowledgement (HARQ-ACK) information, comprising:
 selecting, by a terminal device or a chip, a first physical uplink control channel (PUCCH) resource from at least one first PUCCH resource set based on a first time subunit, wherein the first time subunit is a time subunit in which HARQ-ACK information is located, and wherein the first PUCCH resource is a PUCCH resource in the first time subunit; and 
 sending, by the terminal device or the chip, the HARQ-ACK information to a network device based on the first PUCCH resource; 
 wherein the first PUCCH resource is a PUCCH resource of a second PUCCH resource set; 
 wherein a starting symbol of the first PUCCH resource is determined based on the first time subunit, and the second PUCCH resource set is determined from the at least one first PUCCH resource set based on a quantity of bits of the HARQ-ACK information; and 
 wherein a quantity of symbols of the first PUCCH resource comprised in the second PUCCH resource set is less than or equal to a maximum quantity of symbols of a PUCCH resource specified in a protocol or configured by the network device. 
 
     
     
       2. The method according to  claim 1 , wherein the at least one first PUCCH resource set corresponds to a priority of a service corresponding to the HARQ-ACK information. 
     
     
       3. The method according to  claim 1 , further comprising:
 receiving, by the terminal device, downlink control information from the network device, wherein the downlink control information comprises:
 time subunit quantity indication information K 1  of an interval between a time subunit in which a physical downlink shared channel (PDSCH) is located and the first time subunit, wherein K 1  is usable to determine the first time subunit; and 
 a physical uplink control channel resource indicator (PRI), wherein the PRI is used to determine the first PUCCH resource. 
 
 
     
     
       4. The method according to  claim 3 , wherein K 1 =0, wherein the first time subunit is a time subunit in which a symbol is located, and wherein the symbol corresponds to a symbol sequence number obtained by adding a symbol sequence number of an end symbol of the PDSCH to a quantity of symbols corresponding to a PDSCH processing time. 
     
     
       5. An apparatus, comprising at least one processor and at least one memory storing instructions, wherein the at least one processor is configured to execute the instructions to cause the following to be performed:
 selecting a first physical uplink control channel (PUCCH) resource from at least one first PUCCH resource set based on a first time subunit, wherein the first time subunit is a time subunit in which hybrid automatic repeat request acknowledgement (HARQ-ACK) information is located, and wherein the first PUCCH resource is a PUCCH resource in the first time subunit; and 
 sending the HARQ-ACK information to a network device based on the first PUCCH resource; 
 wherein the first PUCCH resource is a PUCCH resource of a second PUCCH resource set; 
 wherein a starting symbol of the first PUCCH resource is determined based on the first time subunit, and the second PUCCH resource set is determined from the at least one first PUCCH resource set based on a quantity of bits of the HARQ-ACK information; and 
 wherein a quantity of symbols of the first PUCCH resource comprised in the second PUCCH resource set is less than or equal to a maximum quantity of symbols of a PUCCH resource specified in a protocol or configured by the network device. 
 
     
     
       6. The apparatus according to  claim 5 , wherein the at least one first PUCCH resource set corresponds to a priority of a service corresponding to the HARQ-ACK information. 
     
     
       7. The apparatus according to  claim 5 , wherein the at least one processor is further configured to execute the instructions to cause the following to be performed:
 receiving downlink control information from the network device, wherein the downlink control information comprises:
 time subunit quantity indication information K 1  of an interval between a time subunit in which a physical downlink shared channel (PDSCH) is located and the first time subunit, wherein K 1  is used to determine the first time subunit; and 
 a physical uplink control channel resource indicator (PRI), wherein the PRI is used to determine the first PUCCH resource. 
 
 
     
     
       8. The apparatus according to  claim 7 , wherein K 1 =0, wherein the first time subunit is a time subunit in which a symbol is located, and wherein the symbol corresponds to a symbol sequence number obtained by adding a symbol sequence number of an end symbol of the PDSCH to a quantity of symbols corresponding to a PDSCH processing time. 
     
     
       9. The apparatus according to  claim 5 , wherein the apparatus is a terminal device or a chip. 
     
     
       10. An apparatus, comprising at least one processor and at least one memory storing instructions, wherein the at least one processor is configured to execute the instructions to cause the following to be performed:
 sending configuration information to a terminal device, wherein the configuration information indicates at least one first physical uplink control channel (PUCCH) resource set; and 
 receiving hybrid automatic repeat request acknowledgement (HARQ-ACK) information from the terminal device based on a first PUCCH resource, wherein the first PUCCH resource is a PUCCH resource in a first time subunit, wherein the first time subunit is a time subunit in which the HARQ-ACK information is located, and wherein the first PUCCH resource is one PUCCH resource in the at least one first PUCCH resource set; 
 wherein the first PUCCH resource is a PUCCH resource of a second PUCCH resource set; 
 wherein a starting symbol of the first PUCCH resource is determined based on the first time subunit, and the second PUCCH resource set is determined from the at least one first PUCCH resource set based on a quantity of bits of the HARQ-ACK information; and 
 wherein a quantity of symbols of the first PUCCH resource comprised in the second PUCCH resource set is less than or equal to a maximum quantity of symbols of a PUCCH resource specified in a protocol or configured by the apparatus. 
 
     
     
       11. The apparatus according to  claim 10 , wherein the at least one first PUCCH resource set corresponds to a priority of a service corresponding to the HARQ-ACK information. 
     
     
       12. The apparatus according to  claim 10 , wherein the at least one processor is further configured to execute the instructions to cause the following to be performed:
 sending downlink control information to the terminal device, wherein the downlink control information comprises:
 time subunit quantity indication information K 1  of an interval between a time subunit in which a physical downlink shared channel (PDSCH) is located and the first time subunit, wherein K 1  is used to determine the first time subunit; and 
 a physical uplink control channel resource indicator (PRI), wherein the PRI is used to determine the first PUCCH resource. 
 
 
     
     
       13. The apparatus according to  claim 12 , wherein K 1 =0, wherein the first time subunit is a time subunit in which a symbol is located, and wherein the symbol corresponds to a symbol sequence number obtained by adding a symbol sequence number of an end symbol of the PDSCH to a quantity of symbols corresponding to a PDSCH processing time. 
     
     
       14. The apparatus according to  claim 10 , wherein the apparatus is a network device or a chip.